Listar por autor "Soto-Martín, Juan"
Mostrando ítems 1-20 de 40
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A computational approach for electrochemical SERS.Key role of the surface charges and synergy between EM and CT mechanisms.
Aranda, Daniel; García-González, Francisco; Ávila-Ferrer, Francisco José
; López-Tocón, Isabel; Soto-Martín, Juan; Otero-Fernández-de-Molina, Juan Carlos[et al.] (2022-10-12)
We present a computational approach for electrochemical Surface-Enhanced Raman Scattering (EC-SERS). The surface excess of charge induced by the electrode potential (Vel) was introduced by applying an external electric ... -
A SA-CASSCF and MS-CASPT2 study on the electronic structure of nitrosobenzene and its relation to its dissociation dynamics.
Soto-Martín, Juan; Peláez, Daniel; Otero-Fernández-de-Molina, Juan Carlos (AIP Publishing, 2021-01-28)
The photodissociation channels of nitrosobenzene (PhNO) induced by a 255 nm photolytic wavelength have been studied with the complete active space self-consistent (CASSCF) method and the multistate second-order ... -
About the Unexpected Structure and Properties of Molecules Bonded to Metal Nanoclusters.
Aranda Ruiz, Daniel; García-González, Francisco; Ávila-Ferrer, Francisco José; López-Tocón, Isabel; Soto-Martín, Juan; Otero-Fernández-de-Molina, Juan Carlos[et al.] (2023)
SERS (Surface-Enhanced Raman Scattering) is a very powerful technique to gain insight into the nature of metal-molecule hybrids on a molecular level. We show the results of combining SERS and theoretical calculations (1) ... -
Aportación al estudio sobre la fenología reproductora de las algas pardas y verdes del litoral del Sureste de España
Soto-Martín, Juan (Universidad de Málaga, Servicio de Publicaciones, 1991)
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Aportaciones al conocimiento ficogeográfico del sureste de la Península Ibérica
Soto-Martín, Juan; Conde Poyales, Francisco (Universidad de Málaga, Servicio de Publicaciones, 1988)
Se hace un ensayo biogeográfico sobre la flora algal bentónica del Sureste de la Península Ibérica constatándose, la existencia de un componente de tropicalidad más acusado que en las áreas próximas, y al mismo tiempo, se ... -
CASPT2 study of the electronic structure and photochemistry of protonated N -nitrosodimethylamine (NDMA-H+ ) at 453 nm
Soto-Martín, Juan; Peláez, Daniel; Algarra-González, Manuel (AIP, 2023)
In this work, we have studied the photodissociation of the protonated derivatives of N-nitrosodimethylamine [(CH3)2N–NO] with the CASPT2 method. It is found that only one of the four possible protonated species of the ... -
Charge transfer in the nanoscale and SERS: understanding the huge efficiency of the electrode potencial in tuning the CT states
Centeno-Benigno, Silvia Patricia; Ruano, Cristina; Roman-Perez, Jessica; López-Tocón, Isabel; Soto-Martín, Juan; Otero-Fernández-de-Molina, Juan Carlos[et al.] (2014-09-10)
This work deals with the unexplained efficiency of the electrode potential in tuning the energy of the CT states of hybrid systems formed by molecules and metallic nano structures. Huge energy gain up to 5eV/V observed in ... -
Charge Transfer mechanism in the Surface Enhanced Raman Scattering of 2,2'-bipyridine recorded on a silver electrode
Valdivia Mantas, Samuel; Aranda Ruiz, Daniel; López-Tocón, Isabel; Soto-Martín, Juan; Otero-Fernández-de-Molina, Juan Carlos; Ávila-Ferrer, Francisco José[et al.] (2018-07-17)
Nowadays, Surface Enhanced Raman Spectroscopy (SERS) has become a powerful technique to investigate the electronic structure of surface-molecule hybrid systems due to the huge enhancement of the Raman signal. It is established ... -
Chec-list of Andalusia (S. Spain) Seaweeds. II Chlorophyceae
Sánchez, Alberto; Soto-Martín, Juan; Conde Poyales, Francisco; Altamirano-Jeschke, María; Flores-Moya, Antonio; Reyes, Gracia[et al.] (Universidad de Málaga, Servicio de Publicaciones, 1995)
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Check-list of Andalisia (S Spain) Seaweeds. III. "Rhodophyceae"
Sánchez, Alberto; Altamirano-Jeschke, María; Soto-Martín, Juan; Conde Poyales, Francisco; Flores-Moya, Antonio (Universidad de Málaga, Servicio de Publicaciones, 1996)
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Check-list of Andalusia (S. Spain) Seaweeds. I Phaeophyceae
Sánchez, Alberto; Conde Poyales, Francisco; Altamirano-Jeschke, María; Flores-Moya, Antonio; Reyes, Gracia; Soto-Martín, Juan[et al.] (Universidad de Málaga, Servicio de Publicaciones, 1995)
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Comparative performance of theoretical tools in order to quantify the effect of the electric potential on the vibrational wavenumbers and intensities of the SERS of 2-methylpyrazine adsorbed on a nanostructured silver electrode
Valdivia Mantas, Samuel; Aranda Ruiz, Daniel; Soto-Martín, Juan; Otero-Fernández-de-Molina, Juan Carlos; López-Tocón, Isabel (Wiley, 2022-11-16)
The effect of the electrode potential in surface-enhanced Raman scattering (SERS) intensities and wavenumbers of 2-methylpyrazine (2MP) was analyzed on the basis of a resonant charge transfer (CT) mechanism by using a ... -
Comparative study of different theoretical approaches for modeling the dependence of the SERS vibrational wavenumbers on the electrode potential
Aranda Ruiz, Daniel; Valdivia Mantas, Samuel; Soto-Martín, Juan; López-Tocón, Isabel; Ávila-Ferrer, Francisco José; Otero-Fernández-de-Molina, Juan Carlos[et al.] (2019-07-25)
Surface-enhanced Raman scattering (SERS) is a powerful technique to study the electronic structure of charged metal-molecule interfaces, which are relevant in many fields like electrochemistry, heterogeneous catalysis or ... -
A computational study of the vibrationally-resolved electronic circular dichroism spectra of single-chain transoid and cisoid oligothiophenes in chiral conformations
Aranda Ruiz, Daniel; Cerezo Bastida, Javier; Pescitelli, Gennaro; Ávila-Ferrer, Francisco José; Soto-Martín, Juan; Santoro, Fabrizio[et al.] (2019-07-19)
Chiral polythiophenes (PTs) are interesting as organic electronics materials because of their optoelectronic properties, which may arise from ordered supramolecular packings. Chiroptical techniques like ECD can detect these ... -
DFT study of the effect of the electrode potential on anchoring of metal-molecule hybrids
Aranda Ruiz, Daniel; Soto-Martín, Juan; Otero-Fernández-de-Molina, Juan Carlos; Ávila-Ferrer, Francisco José (2018-03-12)
The impact of the molecular adsorption process on the electronic structure is the key in phenomena involved in electrochemistry, catalysis, molecular electronics, SERS, photoelectric conversion, etc. The effect of the ... -
Differentiated adsorption of thiobenzoic acid and thiobenzamide on silver nanoparticles determined by SERS spectroscopy.
López-Ramírez, María Rosa; Aranda, Daniel; López-Tocón, Isabel; Soto-Martín, Juan; Castro, José Luis; Otero-Fernández-de-Molina, Juan Carlos[et al.] (Elsevier, 2020-10-08)
Surface-enhanced Raman scattering of thiobenzoic acid and thiobenzamide have been recorded on three different silver colloids in order to find the chemical species responsible for the spectra and to detect differences ... -
Effect of different excitation wavelength on SERS spectra of pyridine
López-Tocón, Isabel; Aranda Ruiz, Daniel; Ávila-Ferrer, Francisco José; Soto-Martín, Juan; Otero-Fernández-de-Molina, Juan Carlos (2018-05-14)
SERS spectra of pyridine has been already recorded on a silver electrode in a potential range from 0.0 to -1.40 V with a saline solution, pyridine / KCl (0.1M / 0.1M), by using the 514.5 nm exciting line. Under these ... -
Effect of graphene substrate on the SERS Spectra of Aromatic bifunctional molecules on metal nanoparticles
López-Ramírez, María Rosa; Castro, Jose Luis; Arenas Rosado, Juan Francisco; Soto-Martín, Juan; Otero, J.C. (2016-06-27)
The design of molecular sensors plays a very important role within nanotechnology and especially in the development of different devices for biomedical applications. Biosensors can be classified according to various ... -
Elaboración de pruebas de conocimiento en un entorno virtual como método de evaluación continua
López-Tocón, Isabel; Centeno-Benigno, Silvia Patricia; Soto-Martín, Juan; Otero-Fernández-de-Molina, Juan Carlos (2015-06-22)
Se ha realizado una serie de pruebas de conocimiento o cuestionarios, dentro de la plataforma Moodle, como método de evaluación continua de la asignatura de Química Física General que se imparte en el primer curso del Grado ... -
Electrochemical SERS spectra of isonicotinic acid analyzed under a photoinduced charge-transfer mechanism
López-Tocón, Isabel; Roman-Perez, Jessica; Soto-Martín, Juan; Otero-Fernández-de-Molina, Juan Carlos (2014-05-28)
Isonicotinic (IN) acid is one of the three monocarboxilic derivatives of pyridine in which the acid group is located in para-position of the heterocyclic ring. It is a weak acid (pK2=4.86) and therefore, it is not completely ...